ES2254061T3 - STARTER / GENERATOR APPLIANCE FOR INTERNAL COMBUSTION MOROT FOR FOUR TIMES. - Google Patents

Abstract

Internal combustion engine with a crankshaft shaft (12), a cylinder head (32) and a starter / generator apparatus, comprising: an inner rotor (15) provided on said crankshaft shaft (12) and having a permanent magnet (19) arranged on a circumference thereof; an external stator (47) disposed around an outer periphery of said inner rotor (15); a starter coil (51) and a generation coil (50) thrown on said outer stator (47); a control means (54) provided on said inner rotor (15) on the side that is directed towards a crankshaft of said crankshaft shaft (12); supply brush means (41, 44) for said starter coil (51) provided on said inner rotor (15) for displacement in an axial direction of said inner rotor (15) on the side opposite the side on which it is provided said control means (54), and connection means (45) for connecting said control means (54) and said feeding brush means (41, 44) with each other in order to put said feeding brush means ( 41, 44) in contact and out of contact with the supply side.

Description

Starter / generator for motor four-stroke internal combustion.

This invention relates to a motor of internal combustion with a starter / generator.

A starter / generator used in a conventional internal combustion engine (referred to hereafter as "motor") is described by taking as an example a described apparatus in the Official Patent Bulletin with No. JP-A-09-215292. The Figure 11 is a sectional view of an apparatus of starter / generator used in a two-stroke engine for a motorcycle. The starter / generator 100 is provided in the side of a crankcase 101. An inner rotor 102 has a projection rotor 103 mounted on an end portion of a crankshaft shaft 104 and is mounted on the crankshaft shaft 104 for rotation integral by a slot 105. Permanent magnets 106 are mounted in six different places on an outer periphery of the rotor projection 103, and a rotor cover 107 is mounted on the permanent magnets 106.

A cylindrical portion 103a is provided which is projects on a side face of the projection of the rotor 103, and a inner member 108 of cylindrical control is mounted on a outer periphery of the cylindrical portion 103a for movement sliding in an axial direction of the crankshaft 104. It is necessary indicate that the relative movement in a direction of rotation between the inner control member 108 and the cylindrical portion 103a of the rotor protrusion 103 is limited by a pin not shown. A compression spring 109 is housed between the inner member of control 108 and cylindrical portion 103a such that it exerts a force to act in a direction in which the member control interior 108 and the projection of the rotor 103 are separated one of the other.

An external control member 110, intended for such that it surrounds the inner control member 108 from the outer periphery thereof is secured to a side face of the rotor protrusion 103 by means of a rivet 111. The member inner control 108 and outer control member 110 form a bag 113, in which a metal ball 112 is housed with a control weight, and the sectional shape of the bag 113 has a conical shape that narrows conically to the side of the external control member 110.

A brush holder 114 is provided on an outer side of a lower portion of the inner control member 108, and a brush holder 114 and the inner control member 108 are mounted together by means of a bolt 115. Each of the brushes 117, which are deflected by a compression spring, are provided on the brush holder
114

Generation 116 coils and coils of starter 120 are wrapped around the stator cores 118a of an external stator 118 arranged on a periphery exterior of the inner rotor 102, and a cylindrical portion 121 which is extends from the stator cores 118a covers over the member external control 110 and part of the brush holder 114. In addition, a switch holder 122 is connected and supported. by an end portion of the cylindrical portion 121 of the cores of stator 118a. The switch parts 123 on which slide brushes 117 are secured to the support of the switch 122.

In the construction described above, when power is supplied from a battery not shown until starter coils 120 through switch parts 123 and the brushes 117, motor torque is generated on the inner rotor 102, and the crankshaft shaft 104 is rotated to start the engine. As the rotor rotation speed increases inside 102, the metal ball 112 in the bag 113 moves toward the side of the outer control member 110 by a centrifugal force and acts to move the inner control member 108 out of the outer control member 110 in an axial direction of the shaft of the crankshaft 104, and the brush holder 114 moves together with the inner control member 108. As a result, the Brushes 117 are spaced from the switch parts 123. After the brushes 117 are spaced from the pieces of switch 123, crankshaft 104 is driven to rotate through the motor and, as a result, electrical power is generated by the coils of generation 119 and current is supplied to the battery not shown

In the apparatus / generator, since the mechanism control and brush mechanism are provided adjacent to the outer side of the inner rotor, that is, in positions spaced out of the crankshaft shaft bearing, there is the problem that the projection amount of the crankshaft shaft in One direction towards its end is large. In a four engine times, where a crankshaft shaft is planned in a cylinder head, to sometimes drive means are arranged for the shaft of cams on a crankshaft tree. Accordingly, in this case, the distance from the bearing portion of the bearing is increased crankshaft shaft to an extreme portion of the tree crankshaft. Particularly where a body that has a moment of high inertia, such as a control weight, is provided in the end of the tree, this causes an increase in the size of the engine, because the diameter of the crankshaft shaft must be increased or similar.

Document FR 27 44 297 (a member of the JP-A-09 215 292 family) shows in figure 18 an internal combustion engine according to the preamble of claim 1. Here, the crankshaft shaft is extends fully through the starter generator and through the fan hub tab. This provision is unfavorable, on the one hand, because the engine crankshaft shaft known four-stroke has a large axial length, and is unfavorable, on the other hand, due to its mounting structure complex with respect to the inner rotor and the fan hub, both turned by the crankshaft shaft.

In the known engine, the inner rotor is fixed to a conical portion of the crankshaft shaft by a first nut, while a cap, which functions as the hub of the fan, surrounds the crankshaft and is fixed to said tree of the crankshaft by a second nut screwed on the shaft crankshaft at its longitudinal end. Therefore, they are Two assembly operations are required in order to fix the rotor interior and fan hub to crankshaft shaft.

Another arrangement of an inner rotor and a fan hub connected to a crankshaft shaft of an engine is know from the document US-A-477995, in particular in the embodiment shown in figure 1 of this document. He last known crankshaft shaft has, compared to the document FR 27 44 297 mentioned above, an axial length comparably short. In addition, the inner rotor is mounted on the crankshaft shaft by a central bolt that penetrates through the inner rotor and that is screwed into a longitudinal end of the crankshaft shaft

However, the last mounting structure known engine requires at least two assembly operations to get a crankshaft shaft ready for operation. In In effect, the fan hub is first fixed to the outer circumference of the inner rotor at one end longitudinal thereof, and then the inner rotor assembly and the fan hub is fixed to the crankshaft by said bolt central individual.

According to the above, an object of the present invention is to provide an internal combustion engine of the generic type, which can reduce the axial length of the shaft of the engine crankshaft and that can be additionally mounted with greater ease that the engine known from the state of the technique.

This object is achieved by an engine of internal combustion that shows all the characteristics of the new claim 1.

According to an embodiment of the present invention, the drive means for the system of valve drive, control means, rotor Inner and feeding brush means are arranged in this order towards the outer side from a crankshaft chamber on the crankshaft tree. Through this provision that just described, you can reduce the extent on which the crankshaft shaft or a portion provided on the shaft Crankshaft projects to the outer side. In addition, since a portion that has a high pair of inertia, such as a means of control, is arranged rather near the center of the tree crankshaft, in other words closer to the crankshaft chamber, the Crankshaft shaft does not have to have a large diameter, and it can be provide for engine miniaturization.

As can be deduced from the above description, according to the invention indicated in claim 1, when the driving force is provided from a crankshaft to a camshaft provided on the cylinder head of a four-stroke engine, It can reduce the extent to which elements such as an internal rotor for the start-up and planned generation on the crankshaft shaft projects outwards. Accordingly, the miniaturization of the entire
engine.

The following describes in detail the present invention with special reference to figure 1. Figures 2 to 9 they refer to the same engine as figure 1, but they refer to the technical characteristics that are not covered by the claim 1. Figure 10 shows the motorcycle to which apply the motor of figure 1, in general. Figure 11 shows the prior art

Figure 1 is a sectional view of an engine which includes a starter / generator according to a embodiment of the present invention.

Figure 2 is an elevational sectional view. side of a cylinder head and associated members around the engine shown in figure 1.

Figure 3 is a sectional view of the elevation front of the cylinder head and the same associated around the engine.

Figure 4 is an elevational sectional view. cylinder head and associated members around the engine shown in figure 1.

Figure 5 is a sectional view of a automatic gear and associated members around the engine shown in figure 1.

Figure 6 is a sectional view of a Centrifugal clutch and automatic motor gear shown in Figure 1

Figure 7 is a sectional view of a system engine lubrication shown in figure 1.

Figure 8 is an elevational sectional view. side of a crankshaft tree and associated members around which shows an arrangement of a sensor (crankshaft button) that generates a crankshaft pulse.

Figure 9 is a front elevation view of the crankshaft and associated members around it.

Figure 10 is a side elevational view of a motorcycle that installs the engine that includes the device starter / generator according to the embodiment of the present invention

Figure 11 is a partial sectional view of a conventional starter / generator.

Figure 10 is an elevation view of a whole motorcycle on which an apparatus of starter / generator which is a part of an embodiment of The present invention. With reference to figure 10, a section front of body 2 and a rear section of body 3 are connected to each other by a ground floor section 4, and a A body structure is formed from a body frame which includes a bottom tube 6 and a main tube 7. A tank of fuel and a housing (not shown) are supported on the main tube 7, and a seat 8 is arranged about them. Seat 8 can serve as a lid for a box of luggage arranged under seat 8, and the luggage box is built to be opened or closed by a mechanism of articulation provided in a FR front portion thereof.

Meanwhile, on the front section of the body 2, a head of direction 5 is provided on the tube bottom 6 and a front fork 12A is supported for pivot movement by the steering head 5. A bar of handlebar 11A is mounted on an upper end of the fork front 12A, which extends upwards, while a wheel front 13A is supported for rotation at a lower end of the front fork 12A. An upper portion of the bar Handlebar 11A is covered with a crank cover 33, which serves also as a measuring panel.

An articulation member (hanger) 37 is supported for pivotal movement in an intermediate portion of the main tube 7, and an oscillating unit 17 is connected and supported on the main tube 7 for oscillating movement by the hanger 37. A four-stroke engine of a cylinder 200 is supported on the front portion of the oscillating unit 17. A One stage transmission 35 is formed such that extends backward from the engine 200, and a rear wheel 21 is supported for rotation on a mechanism for reducing the speed 38 provided in a rear portion of the transmission without stepping 35 with a centrifugal clutch interposed in the middle. A rear cushion 22 is interposed between an upper end of the speed reducing mechanism 38 and a curved upper portion of the main tube 7. An inlet tube 23 extending from a cylinder head 32 of the engine 200 is connected to a front portion of the oscillating unit 17, and a carburetor 24 and an air filter 25 connected to carburetor 24 are arranged for the inlet tube 2. 3.

A force arm 28 is mounted secured in a base end thereof on a force tree 27 that is extends from a transmission case cover 36 of the transmission no staggered belt type 35, and a force pedal 29 it is provided at one end of the force arm 28. A support main 26 is mounted for pivot movement on a pivot 18 in a lower portion of an oscillating unit box 31, and after parking, the main support 26 rises vertically (indicated by a chain line).

The engine is described in detail below. 200 mentioned above. Figure 1 is a sectional view of the motor 200 showing a structure of the apparatus of starter / generator and is a sectional view taken along the line A-A in figure 10. With reference first place to figure 1, a crankshaft shaft 12 supported for rotation by main bearings 10, 11 is provided on the housing of the oscillating unit 31, which includes hanger 37 retained by the tube main 7 described above, and a connecting bar 14 is connected to the crankshaft 12 by a crankshaft pin 13. A inner rotor 15 of the starter / generator set is provided in an end portion of the crankshaft shaft 12 that extends from a crankshaft chamber 9.

The inner rotor 15 includes a rotor boss 16 permanent manes 19 mounted on an outer periphery of the projection 16. Permanent magnets 19 are, for example, magnets of the type of neodymium-iron-boron and are provided in six locations at equal angular distances around the projection of the rotor 16. The projection of the rotor 16 is provided in a central portion thereof with a conical portion of one end of the crankshaft shaft 12. A flange member 39 is disposed at one end of the projection of the rotor 16 (one end on the side opposite the crankshaft shaft 12), and the rotor boss 16 is secured to the crankshaft shaft 12 together with the member of tab 39 for a bolt 20.

A cylindrical portion 40 of small diameter which is projected until the side of the flange member 39 is formed on the projection of the rotor 16, and a brush holder 41 is provided on a outer periphery of the small diameter cylindrical portion 40 for sliding movement on cylindrical portion 40 of small diameter The brush holder 41 is diverted to the flange member 39 by a helical spring of compression 42. Each of the brushes 44 deflected by a spring compression helical 43 is provided on the brush holder 41. A connecting pin 45, which extends parallel to the central axis of the crankshaft shaft 12, it extends through the projection of the rotor 16, and one end of the connection pin 45 is connected to brush holder 41, while the other end of the connecting pin 45 is connected to a control board 46 (described below in detail).

The stator cores 48 of an outer stator 47 arranged on an outer periphery of the inner rotor 15 are secured to each oscillating unit 31 by means of bolts 49. A generator coil 50 and a starter coil 51 are wrapped around a yoke 49a of each of the cores of the stator 48, and a cylindrical portion 49b extending from the stator cores 48 covers over the brush holder 41 described above. A switch holder 52 is connected to an end portion of the cylindrical portion 49b, and switch parts 53 are secured to switch holder 52 for sliding movement with brushes 44. In particular, switch parts 53 they are arranged in opposite positions to the brushes 44 deflected by the compression coil springs 43 described to continuation.

It should be noted that, although only shown a brush in figure 1, of course not only one but a required number of such brushes 44 are provided in a direction of rotation of the inner rotor 15. An example of the quantity and the shape of the brushes and switch parts is described in the specification of a previous application (publication of Japanese Patent No. Hei 9-215292) by the Applicant of the present application. In addition, the career of brushes 44 is limited to a predetermined amount of so that when the brush holder 41 is shifted to the side of the crankshaft shaft 12 by a control, described below, brushes 44 are spaced from switch parts 53. For the limitation of the stroke, stop means are provided between the brush holder 41 and brushes 44.

A control 54 to switch automatically between a boot mode and a generation mode is provided in an extreme portion of the projection of the rotor 16, that is, on a side of the adjustment portion of the projection of the rotor 16 with the shaft of the crankshaft 12. The control 54 includes the plate 46 described above, and a roller 55 that serves as a control weight for moving plate 46 towards the central axis of the tree of the crankshaft 12. Although the control weight (roller) 55 is formed preferably from a core made of a metal and covered with a resin cap, it can be a metal core that does not It has no resin cover provided on it or can be formed to from a resin in general. A bag 56 to accommodate the weight of control (roller) 55 is formed there on the projection of the rotor 16, and bag 56 has a conical cross section that is concave on the side of the outer stator 47, as seen in the Figure 1.

A radiator fan 57 is mounted on the flange member 39, and a radiator 58 is provided in a opposition ratio to the radiator fan 57. In addition a gearwheel 59 is secured to crankshaft 12 between the inner rotor 15 and main bearing 11, and a chain 60 for get power to drive a camshaft (it is done reference to figure 2) from the crankshaft shaft 12 is wrapped around the 59 cogwheel. It should be noted that the Cogwheel 59 integrally forms with a gear wheel 61 to transmit power to a pump that circulates the oil lubricant. The gear wheel 61 transmits power to the wheel gear secured to a drive shaft for a pump gear described below with reference to the figure 7.

In the construction described above, if press a start button to apply a voltage from a battery (not shown) to switch parts 53, then the current flows to the starter coil 51 through the brushes 44, so that the inner rotor is rotated 15. As result, the crankshaft shaft 12 coupled to the inner rotor 15 is turned to start engine 200. As the motor rotation speed 200, control weight (roller) 55 it is activated by a centrifugal force and is moved towards a outer periphery of rotor projection 16 in bag 56 until which reaches the position indicated by a chain line in the Figure 1.

As the control weight moves (roller) 55, also plate 46 and connecting pin 45, which is held in engagement with plate 46, they move as Indicates by chain lines. Since the other end of the pin of connection 45 is retained in engagement with the brush holder 41, also the brush holder 41 is displaced in a way Similary. Since the stroke of the brushes 44 is limited as described above, if the brush holder 41 is displaced in an amount greater than the race, then the contact between the brushes 44 and switch parts 53. After the brushes 44 move from switch parts 53, the crankshaft 12 is driven by the engine to rotate, and as result, electric power is generated by the coils of 50th generation and battery power is supplied.

A structure of a structure is described below. cylinder head and associated members around the 200 engine. This structure is not part of the present invention, as defined in claim 1. Figure 2 is an elevational sectional view side of an engine head and associated members around thereof, Figure 3 is a sectional view in front elevation thereof, and Figure 4 is an elevational sectional view. rear of them. A piston 63 disposed in a cylinder 62 is connected to the small end side of the connecting bar 14 by a piston pin 64. A spark plug 65 is screwed into the cylinder head 32, and an electrode portion of the spark plug 65 is directed towards a combustion chamber formed between the piston head 63 and cylinder head 32. Cylinder 62 is surrounded by a water shirt 66.

A crankshaft shaft 69 supported for rotation by bearings 67, 68 is provided on the cylinder 62 in the cylinder head 32. A fixing device 70 is mounted on the shaft of cams 69 and a gearwheel of cams 72 and a portion of deviation 72a for cooperation with a cam sensor 155 for generate an impulse of cams are fixed together with each other to fixing device 70. Chain 60 extends around the cam gear 72. Rotation of cam wheel 59 (with reference to figure 1) described above, that is, the crankshaft shaft rotation 12, is transmitted to the shaft cams 69 along chain 60.

Oscillating arms 73 are provided on the camshaft 69, and each of the oscillating arms 73 is oscillated according to a cam profile of the camshaft 69 a as the camshaft rotates 69. The cam profile of the tree of cams 69 is determined in such a way that each of a intake valve 95 and an exhaust valve 96 opens and closes in response to a predetermined stroke of a motor four times. The intake pipe 23 opens and closes by the intake valve 95, and an exhaust pipe 97 opens and closes by the exhaust valve 96.

An exhaust cam and an intake led form integrally on the camshaft 69, and a cam of decompression 98, which is coupled with camshaft 69 only for a direction of reverse rotation, it is provided adjacent to the cams When the camshaft 69 rotates in the reverse direction, the cam decompression 98 is rotated following the rotation of the shaft of cams 69 to a position where it extends beyond the profile of the outer periphery of the exhaust cam.

Accordingly, when the camshaft 69 rotates forward, the exhaust valve 96 can be placed in a slightly elevated position, and the load on the race can be reduced engine compression Therefore, since you can reduce the torque when the crankshaft is started, it you can use a small size starter like the starter for the four stroke engine. As a result, there is the advantage that the associated members around the crankshaft can be perform compact and the angle of inclination can be performed higher. It should be noted that when the cam rotates forward in a small amount, the outer profile of the decompression cam 98 returns to a position within the profile of the outer periphery of the exhaust cam.

A pumping chamber 76 surrounded by a base of water pump 74 and a water pump housing 75 are formed in the cylinder head 32. A pump shaft 78 having an impeller 77 is arranged in the pump chamber 76. The pump shaft 78 is mounted on an end portion of camshaft 69 and is retained for rotation by means of a bearing 79. The force of pump shaft drive 78 is obtained from a pin 80 that is coupled to a central portion of the cam gear 72.

A pneumatic tongue valve 94 is provided on a head cover 81. The tongue valve air 94 takes air to increase the emission when a negative pressure in the exhaust pipe 97. It should be noted that although board members are planned at various locations around of the pump chamber 76, the description of some is omitted concrete of them.

An automatic gear is explained below. which transmits rotation of the engine 200 to the rear wheel, While the speed changes. Automatic gear is not part of the invention as defined in claim 1. Figures 5 and 6 are sectional views of the automatic motor gear, and the Figure 5 shows the drive side, while Figure 6 It shows the driven side. With reference to figure 5, a pulley 83 to wrap a V-belt 82 around it is provided on an end portion of the crankshaft shaft 12 on the side opposite the side on which the inner rotor 15 is provided of the starter / generator described above. Pulley 83 is composed of a fixed pulley piece 83a fixed against movement in a direction of rotation and an axial direction with with respect to the crankshaft shaft 12 and a movable pulley piece 83b that can be slidably moved in an axial direction with with respect to the crankshaft shaft 12. A support silver 84 is provided on the rear face of the movable pulley part 83b, it is that is, a face of the movable pulley piece 83b that does not contact the V-belt 82. The support plate 84 is restricted in movement both in a sense of rotation and also in a axial direction with respect to the crankshaft shaft 12 and rotates integrally with the crankshaft tree 12. A free space defined by support plate 84 and mobile pulley part 83b it forms a bag, in which a roller 85 is housed which serves as a control weight

At the same time, a clutch mechanism for coupling power to the rear wheel 21 is constituted of the Following way. With reference to figure 6, a main tree 125 of the clutch is supported by a bearing 127 mounted on a housing 126 and another bearing 129 mounted in a gearbox 128. A fixed pulley piece 132a of a pulley 132 is supported on the main shaft 125 by a pair of bearings 130 and 131. A cup-shaped clutch plate 134 is secured to a extreme portion of the main shaft 125 by a nut 133.

One piece of mobile pulley 132b of pulley 132 It is intended for sliding movement in one direction length of the main shaft 125 on a sleeve 135 of the fixed pulley piece 132a. The mobile pulley part 132b is coupled with a disk 136 for integral rotation around the main shaft 125. A compression coil spring 137, which exerts a force of repulsion in a direction in which the distance is increased between the disk 136 and the mobile pulley part 132b, it is provided between disk 136 and mobile pulley part 132b. In addition, a shoe 139 supported for oscillating movement by pin 138 it is provided on disk 136. When the speed is increased rotating disk 136, shoe 139 is activated by a force centrifugal and swung towards the outer periphery until it enters contact with the inner periphery of clutch plate 134. There are to indicate that a spring is planned, so that the shoe 139 it contacts the clutch plate 134 when the speed Rotation of disk 136 reaches a predetermined level.

A pinion 141 is secured to the main shaft 125, and pinion 141 is retained in gear coupling with a gear wheel 143 secured to a idle shaft 142. In addition, a pinion 146 is secured to an output power shaft 145. The rear wheel 21 is composed of a tire 21a and a tire 21b mounted around the tire 21a, and the tire 21a is secured to the output power shaft 145.

In the construction described above, when engine speed is minimal, roller 85 is positioned as indicated by a continuous line in figure 5 and the V-belt 82 is wrapped around a portion of minimum diameter of the pulley 83. The movable pulley part 132b of the pulley 132 is offset by helical compression spring 137, so that moves to a position on a solid line of figure 6, and the V-belt 82 is wrapped around a portion of maximum pulley diameter 132. In this condition, since the main shaft 125 of the centrifugal clutch is rotated at speed minimum, the centrifugal force applied to disk 136 is minimal, and since the shoe 139 is pushed in by the spring 140, does not contact clutch plate 134. In short, the rotation of the motor is not transmitted to the main shaft 125 and the rear wheel 21.

On the other hand, when the motor speed is high, the roller 85 moves in the direction of the outer periphery by the centrifugal force. The position indicated by a chain line in Figure 5 is the position of the roller 85 when the rotation speed is maximum. When the roller 85 is displaced in the direction of the outer periphery, since the movable pulley part 83b is driven to move towards the side of the fixed pulley part 83a, the V-belt moves towards the portion of the maximum diameter of the pulley 83. Therefore, on the side of the centrifugal clutch, the movable pulley piece 132b moves towards the helical compression spring 137, and the V-belt moves to the minimum diameter portion of the pulley 132. accordingly, the centrifugal force acting on the disk 136 is increased, and the shoe 139 projects outwardly against the spring 140 until it comes into contact with the clutch plate 134. As a result, the motor rotation is transmitted to the main shaft 125, and the power is transmitted to the wheel 21 through the gear train. Thus, the diameters of the pulley portions 83 on the crankshaft shaft side 12 and the pulley 132 on the side of the centrifugal clutch, around which the V-belt 82 is wound are varied according to the speed of motor rotation and speed operation is achieved
variable.

At the same time, after the engine starts, the starter coil 51 can be activated to drive the motor as described above, in the present embodiment, a force starter is also used, in which the engine 200 is started by a start operation by impulse. The pulse starter is described with additional reference to figure 5. A hook gear wheel operated 86 for impulse start is secured to one side rear of the fixed pulley part 83a described above. To the same time, a support shaft 88 that has a gear Helical 87 is supported for rotation on the side of the cover 36. A cover 89 is secured to an extreme portion of the support shaft 88, and a hook wheel of 90 drive to engage with the hook gear wheel actuated 86 described above is formed on one face end of cover 89.

In addition, the impulse shaft 27 is supported for rotation on the cover 36, and a helical gear of sector 91, which is retained in gear coupling with the helical gear 87 described above, is welded to impulse shaft 27. A groove is formed in an extreme portion of the impulse shaft 27, that is, a portion of the impulse shaft 27, which projects outward from deck 36 and this slot is coupled with another slot intended to be the impulse arm 28 (it refers to figure 10). It should be noted that the numbers of reference 92, 93 each designate a spring of return.

In the construction described above, if the impulse pedal 29 is pushed down, then the tree of pulse 27 and the sector 91 helical gear are rotated against the return spring 93. The support shaft 88 and the gear Sector 91 helical have tight spiral directions of such that when the sector 91 helical gear is turned by a push down operation of the boost pedal, it can exert a pushing force to drive the gear helical 87 towards the side of pulley 83. Accordingly, when impulse pedal 29 is pushed down, the gear helical 87 travels to the side of pulley 83 and the wheel of drive hook gear 90 formed on the face end of the cover 89 is coupled to the wheel of driven hook gear 86. As a result, the shaft is turned of the crankshaft 12, thus allowing the engine to start 200. After engine start, if the impulse towards the motor is reduced below the impulse pedal 29, so that the gear is rotated sector 91 helical in reverse direction by the springs of return 92, 93, then the coupling between the wheel is canceled of gear drive hook 90 and gear wheel of hook activated 86.

A system of Lube oil supply, which is not part of this invention as defined in claim 1, with reference to the Figure 7. The oil supply side is provided below the crankshaft chamber 9. A conduit 148 for introducing oil is formed in an oil tray 147, and oil is introduced into a gear pump 149 in one direction of an arrow mark D1. The oil introduced in gear pump 149 is raised by pressure and discharged into a conduit 150 and passes to conduit 150 in directions indicated by arrow marks D2, D3 until discharge into the crankshaft chamber.

Here, a gear wheel 152 is coupled to a pump shaft 151 of gear pump 149, and the wheel of gears 61 coupled to the crankshaft shaft 12 is retained in gear coupling with gear wheel 152. In in particular, gear pump 149 is driven by rotation of the crankshaft 12 and circulates the oil to lubrication.

The following describes an arrangement of a sensor for the emission of a crankshaft pulse. This arrangement does not form part of the present invention, as defined in the claim 1. Figure 8 is an elevational sectional view side of the crankshaft and associated members around which shows an arrangement of a sensor (crankshaft button) to generate a crankshaft pulse, and figure 9 is a view in front elevation section of it. With reference to the figures 8 and 9, the crankshaft housing is composed of a crankshaft housing 99F front and a 99R rear crankshaft case, and a push button crankshaft 153 is provided on the side of the crankshaft rear 99R, such that it extends perpendicularly to the crankshaft 12, in such a way that it extends perpendicular to the crankshaft tree 12. And an extreme portion of detection 153a of the crankshaft button 153 is arranged in an opposite relationship on an outer peripheral edge of a tape 12L. A projection or repulsion portion 154 is formed on an outer periphery of the belt 12L, and the crankshaft button 153 is magnetically coupled to the repulsion portion 154 to emit a detection signal of an angle of the crankshaft.

As described above, herein example, the gearwheel 59 for driving the shaft cams 69 and gear wheel 61 to drive the pump oil are mounted on the crankshaft shaft 12 adjacent to the bearing 11, on which the crankshaft shaft 12 is supported. AND in a position in the vicinity of the sprocket 59 and the wheel gear 61, that is, in a position not far from the bearing main 11, the inner rotor 15 which includes the permanent magnets 19. Particularly, the control weight 55 of the control mechanism, which automatically mutates the boot and the generation is arranged in the vicinity of the bearing 11.

The invention miniaturizes a four-engine times, where the camshaft drive means are provided on a crankshaft tree. A cogwheel 59 for the camshaft drive is mounted on a shaft crankshaft 12, which projects from a crankshaft chamber 9, and a starter / generator set is provided on the outer side with respect to the sprocket 59. A control 54, which includes a control weight 55 that works with a centrifugal wheel, is provided on the side of an inner rotor 15 adjacent to the wheel toothed 59, while a brush holder 41, which includes brushes 44, is provided on the outer side of the inner rotor 15. In order to bring brushes 44 in contact and out of contact with switch parts 53 in response to a movement of control weight 55, control 54 and the brush holder 41 is connected to each other by a connecting pin 45. By the construction described, it can be reduce the extent to which the device is projected starter / generator to the outer side.

Claims (5)

1. Internal combustion engine with a shaft crankshaft (12), a cylinder head (32) and a starter / generator set, which includes: an inner rotor (15) provided on said shaft of the crankshaft (12) and that has a permanent magnet (19) arranged on a circumference thereof; an external stator (47) arranged around an outer periphery of said inner rotor (15); a starter coil (51) and a coil of generation (50) thrown on said outer stator (47); a control means (54) provided on said inner rotor (15) on the side that is directed towards a crankshaft of said crankshaft shaft (12); supply brush means (41, 44) for said starter coil (51) provided on said rotor interior (15) for displacement in an axial direction of said inner rotor (15) on the side opposite the side on which it is said control means (54), and connection means (45) for connecting said control means (54) and said feeding brush means (41, 44) with each other in order to put said brush means of supply (41, 44) in contact and out of contact with the side of feeding, characterized because said engine is an internal combustion engine of four stroke that has a valve drive system (60, 69, 72, 69) to actuate an intake valve (95) and a exhaust valve (96) provided on said cylinder head (32) and means of drive (59) for said valve drive system arranged on one side of said crankshaft shaft (12), in which said inner rotor (15) is provided in an extreme portion of said camshaft (12) on the side on which they are provided said drive means (59), said means being provided control (54) on the inner rotor (15) on the adjacent side  to said drive means (59), and in which a member of flange (39) is disposed at an axial end of a projection of rotor (16) on the side opposite the crankshaft (12), such so that a portion of the rotor boss (16) that rests on a bolt (20) and a cylindrical portion (40) of the rotor boss (16) that supports the brush holder (41) are located axially between said crankshaft shaft (12) and said flange member (39), said rotor projection being secured (16) and said flange member (39) together to the crankshaft shaft (12) by bolt (20), where the flange member (39) is located axially between said rotor boss (16) and the head of said bolt (20). 2. Internal combustion engine according to claim 1, characterized in that said cylindrical portion (40) projects to the side of the flange member (39), wherein said brush holder (41), as a part of said Feed brush means (41, 44), is provided on an outer periphery of said cylindrical portion (40), adapted to move slidably on said cylindrical portion (40). 3. Internal combustion engine according to claim 1 or 2, characterized in that said control means (54) comprise a bag (56) for accommodating a control weight (55) there, said bag (56) having a cross section conical, which is concave on the radial outer side, said conical cross section being provided by a bag wall formed integrally on said rotor boss (16). 4. Internal combustion engine according to claim 3, characterized in that said control means (54) comprises a plate (46) movable in an axial direction, said displacement of said plate (46) causing a displacement of a brush holder (41) as a part of said feeding brush means (41, 44). 5. Internal combustion engine according to claim 4, characterized in that said plate (46) is a flat plate.